Update Hypothesis (#2678)

Fixes #1738

Signed-off-by: Zac Hatfield-Dodds <zac@zhd.dev>

setup.py

@@ -58,8 +58,7 @@ tests_require = [
     'pep8',
     'flake8',
     'flake8-quotes==0.8.1',
-    'hypothesis~=3.18.5',
-    'hypothesis-regex',
+    'hypothesis>=5.3.0',
     # Removed pylint because its GPL license isn't Apache2-compatible
     'pytest>=3.0.0',
     'pytest-cov>=2.2.1',

tests/common/test_schema.py

@@ -9,7 +9,7 @@ properties related to validation.
 from unittest.mock import patch
 
 from hypothesis import given
-from hypothesis_regex import regex
+from hypothesis.strategies import from_regex as regex
 from pytest import raises
 
 from bigchaindb.common.exceptions import SchemaValidationError